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Authors
Nakamura, Yuta
Yamasue, Mari
Komiya, Kosaku
Takikawa, Shuichi
Hiramatsu, Kazufumi
Kadota, Jun-ichi
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Article History
Received: 14 September 2021
Accepted: 14 March 2022
First Online: 5 April 2022
Declarations
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: The study protocol was approved by the Institutional Ethics Committee of National Hospital Organization Nishi-Beppu Hospital, Oita, Japan (approval number: 1–4; approval date: September 25, 2019) and followed the Declaration of Helsinki Ethical Principles for medical research involving human subjects. The need for informed consent was waived by the committee because of the retrospective design of the study.
: The need for consent to publish was also waived by the committee of National Hospital Organization Nishi-Beppu Hospital, Oita, Japan (approval number: 1–4; approval date: September 25, 2019) because of the retrospective design of the study.
: All authors have stated explicitly that there are no conflicts of interest in connection with this article.
